Indian Navy Akula-II-class nuclear submarine, leased from Russia, INS Chakra.
Russian submarine Daniil Moskovsky
TERRITORY, RUSSIA. MARCH 19, 2016. The K-419 Kuzbass, a Project 971 Akula-class nuclear-powered attack submarine, joins the Russian Pacific Fleet after undergoing repairs at the Zvezda shipyard. The submarine's life-support systems and radio and hydroacoustic equipment have been upgraded. Yuri Smityuk/TASS